Skyscan 14" Analog Atomic Wall Clock Automatically sets itself to the correct time by receiving and decoding the NIST radio signal from Fort Collins, Colorado Ensures daily accuracy to a fraction of a second by refreshing the signal daily Sets itself for Daylight Saving Time and back to standard time automatically Extremely easy to operate; Never needs to be set Allows all clocks in offices, schools, factories to show the correct, and identical, time